As said above, I just updated my photoshop to the last version after getting my new tablet. I already had a hard time configuring the pen pressure stuff not working with windows ink, but now I can't use the scrubby zoom like I used to do in the previous versions. I searched for a solution but couldn't find anything that works. I updated my GPU drivers (rtx 2070) and it worked afterwards, but after rebooting my pc, it stopped working for I don't know what reason. As I'm writing this, I had my tablet unplugged, and relaunched photoshop, and the scrubby zoom is somehow back?? I don't know, nothing makes sense to me, it's all weird.
If someone has a way to fix this on the long term please help me because I don't know what to do anymore lol
As I am not sure which method to activate Scubby zoom you are choosing (Space+ALT or just holding the Z key as a spring loaded key) I would start by asking if the mouse and the Pen behave the same way? One thing that I have gotten in the habit of doing when I see strange misbehavior is to reset the PS prefs by holding CTRL+ALT+SHIFT while launching PS. This will prompt you whether you want to set PS to its default settings. I have see this fix too many things, but if the problem is not resolved through one of these methods or if it comes back, please touch back in and I will see if I can think of anything else.